CourseCourseConceptConceptDocumentDocument

IB Biology HL C1.2.15 Hl Chemiosmosis Questions

Learn how protons flow back through ATP synthase, driving ADP phosphorylation; compare mitochondrial and thylakoid membranes as chemiosmosis sites in IB Biology HL C1.2.15.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Explain how protons flow down their electrochemical gradient through ATP synthase.
  • Relate proton flow through ATP synthase to ADP phosphorylation and ATP production by oxidative phosphorylation.
  • Compare how chemiosmosis operates at mitochondrial cristae and thylakoid membranes.

IB Biology HL C1.2.15 Hl Chemiosmosis Questions question 1

[Maximum number: 4]

The electron micrograph shows part of a cell including a mitochondrion.

Figure for Question IB Biology HL C1.2.15 Hl Chemiosmosis Questions question 1 — IB Biology HL

Explain how ATP is generated in mitochondria by chemiosmosis.

All question bank results loaded